Apparatus for laying subterranean plastic tape and pipe
CA 1268953 C · Owner: Paulovits, Ferenc · Inventors: Paulovits, Ferenc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus is disclosed for simultaneously laying plastic tape and plastic pipe underground. An earth splitting tool and a wing-type hollow laying head are attached to a frame for providing a slit in the ground and for widening the slit below ground level. Means are provided for dispensing plastic tape and plastic pipe for, folding the plastic tape, and for unfolding the plastic tape in the underground widened slit.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 15, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 2007.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.